创建项目
创建项目方式选择Spring Initializr

勾选Lombok和Spring Web后创建

创建后,等依赖下载完成

启动项目,验证Spring项目是否曾经成功

后端
创建DemoController
package com.example.demo;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@CrossOrigin //允许跨域
@RestController
public class DemoController {
@GetMapping("/")
public String index() {
return "Hello World!";
}
}
前端
创建demo.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>测试接口</title>
</head>
<body>
<script src="https://cdn.bootcss.com/axios/0.18.0/axios.min.js"></script>
<script>
axios.get('http://localhost:8080/').then(response => {
console.log(response.data)
})
</script>
</body>
</html>
运行
按F12打开浏览器控制台查看
